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Toilet compost and human urine used in agriculture: fertilizer value assessment and effect on cultivated soil properties

descriptionPublicationkeyboard_double_arrow_right Article , Journal 09 Dec 2014 France Publisher:Informa UK LimitedJournal:Environmental Technology, volume 36, pages 1,291-1,298 (issn: 0959-3330, eissn: 1479-487X,

Authors: Mariam Sou; Drissa Sangare; R. Lahmar; N. Hijikata; Naoyuki Funamizu; Dakoure; H. Yacouba; +1 Authors

doi: 10.1080/09593330.2014.984774

pmid: 25371046

Toilet compost and human urine used in agriculture: fertilizer value assessment and effect on cultivated soil properties

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Abstract

Toilet compost (TC) and human urine are among natural fertilizers, which raise interest due to their double advantages to combine sanitation and nutrient recovery. However, combination of urine and TC is not so spread probably because the best ratio (urine/TC) is still an issue and urine effect on soil chemical properties remains poorly documented. This study aims to determine the best ratio of urine and TC in okra cultivation, by targeting higher fertilization effect combined with lower impact on soil chemical properties. Based on Nitrogen requirement of okra, seven treatments were compared: (T0) no fertilizer, (T1) chemical fertilizer (NPK: 14-23-14), (T2) 100% urine, (T3) 100% TC, (T4) ratio of 75% urine+25% TC, (T5) 50% urine+50% TC and (T6) 25% urine+75% TC. Results indicated that T4 (75% urine+25% TC) gave the highest plant height and yield. In contrast, T2 (100% urine) gave the lowest results among all treatments, indicating toxicity effects on plant growth and associated final yield. Such toxicity is confirmed by soil chemical properties at T2 with soil acidification and significant increase in soil salinity. In contrast, application of urine together with TC mitigates soil acidification and salinity, highlighting the efficiency of urine and TC combination on soil chemical properties. However, further investigation is necessary to refine better urine/TC ratio for okra production.

Country

France

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Keywords

P33 - Chimie et physique du sol, Recyclage des déchets, Compostage, Organisme indicateur, Teneur en azote, Urine, Abelmoschus esculentus, Soil, Abelmoschus, Humans, Propriété physicochimique du sol, Biomass, Engrais, Toilet Facilities, Fertilizers, Sewage, Sodium, 000 - Autres thèmes, Agriculture, Compost, Biofertilisant, Utilisation des déchets, Fèces, F04 - Fertilisation, Genre humain, agrovoc: agrovoc:c_8081, agrovoc: agrovoc:c_24040, agrovoc: agrovoc:c_5193, agrovoc: agrovoc:c_4586, agrovoc: agrovoc:c_8103, agrovoc: agrovoc:c_2867, agrovoc: agrovoc:c_1795, agrovoc: agrovoc:c_16202, agrovoc: agrovoc:c_15956, agrovoc: agrovoc:c_7182, agrovoc: agrovoc:c_24975, agrovoc: agrovoc:c_2772, agrovoc: agrovoc:c_8557, agrovoc: agrovoc:c_6478

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	21
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%